package org.zhou.config;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginHandlerInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
//       登陆成功之后 应该有用户的session
        Object loginUser = request.getSession().getAttribute("loginUser");
        if (loginUser==null){
//            没有登陆
            request.setAttribute("flmsg","no Authority,you need sign in first");
            request.getRequestDispatcher("/index.html").forward(request,response);
            return  false;
        }else {
            return  true;
        }
    }
}
